This combination seems so obvious, I can't believe that I've never thought to try it before now. A food reviewer at The Takeout realized that a Wendy's Frosty might be even better if you dumped some booze into it. She bought a bunch of liquors and a bunch of Frostys and tested out how they taste together.

The top two are: Kahlua and Baileys Espresso Cream. Neither of those are surprising, since they're both key ingredients in most of the drinks that fall into the "alcoholic milkshake" category.

The rest of the other options are: Rumple Minze peppermint schnapps, Godiva Milk Chocolate liqueur, and Frangelico.

The liquors that didn't taste good are: Godiva White Chocolate, Captain Morgan Spiced Rum, Smirnoff Vanilla Vodka, and Rumchata.

Then there's the worst ones, the liquors that made her feel like gagging when they were mixed with a Frosty are: Fernet Branca, Canadian Club whiskey, and Smirnoff Whipped Cream Vodka.